_:b57076580	<http://www.w3.org/ns/oa#hasSelector>	_:b57076581 .
_:b57076580	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/606c3e31cc27c9c1a9a2d83079e97c54d35f2631/1> .
_:b57076581	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57076581	<http://www.w3.org/ns/oa#exact>	"serum" .